Finding the Third Proportional to 222,131.50 and 317,427

Step by Step Solution

1. Step 1: Write the proportion equation
   222,131.50 : 317,427 = 317,427 : x
2. Step 2: Convert to fraction form
   222,131.50/317,427 = 317,427/x
3. Step 3: Cross multiply
   222,131.50x = 317,427 × 317,427
4. Step 4: Simplify right side
   222,131.50x = 100,759,900,329
5. Step 5: Solve for x
   x = 100,759,900,329/222,131.50
6. Step 6: Final answer
   x = 453,604.74